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import platform
import queue
import shutil
import subprocess
import tarfile
import tempfile
import threading
import time
import urllib.request
import zipfile
from collections import deque
from pathlib import Path
from flaredantic import NotifyEvent
from helpers import files
from helpers.tunnel_common import TunnelHelper
RUNTIME_BIN_DIR = Path(files.get_abs_path("tmp", "bin"))
def executable_name(name):
return f"{name}.exe" if platform.system().lower() == "windows" else name
def chmod_executable(path):
if platform.system().lower() != "windows":
path.chmod(0o755)
def notify_download(notify, message, data=None):
if callable(notify):
notify(NotifyEvent.DOWNLOADING, message, data)
def notify_download_complete(notify, message, data=None):
if callable(notify):
notify(NotifyEvent.DOWNLOAD_COMPLETE, message, data)
def download_file(url, destination, notify=None):
destination.parent.mkdir(parents=True, exist_ok=True)
notify_download(notify, f"Downloading {url}")
temp_fd, temp_name = tempfile.mkstemp(
prefix=f"{destination.name}.",
suffix=".download",
dir=str(destination.parent),
)
os.close(temp_fd)
temp_path = Path(temp_name)
try:
with urllib.request.urlopen(url, timeout=60) as response:
with temp_path.open("wb") as handle:
shutil.copyfileobj(response, handle)
temp_path.replace(destination)
notify_download_complete(notify, f"Downloaded {destination.name}")
return destination
except Exception:
temp_path.unlink(missing_ok=True)
raise
def platform_parts():
system = platform.system().lower()
machine = platform.machine().lower()
if machine in {"x86_64", "amd64"}:
arch = "amd64"
elif machine in {"aarch64", "arm64"}:
arch = "arm64"
elif machine in {"i386", "i686", "x86"}:
arch = "386"
elif machine.startswith("arm"):
arch = "arm"
else:
raise RuntimeError(f"Unsupported CPU architecture for tunnel binary: {machine}")
if system not in {"linux", "darwin", "windows"}:
raise RuntimeError(f"Unsupported operating system for tunnel binary: {system}")
return system, arch
def extract_named_members_from_tar(archive_path, destination_dir, member_names):
destination_dir.mkdir(parents=True, exist_ok=True)
extracted = {}
wanted = set(member_names)
with tarfile.open(archive_path, "r:*") as archive:
for member in archive.getmembers():
member_name = Path(member.name).name
if member_name not in wanted or not member.isfile():
continue
target = destination_dir / executable_name(member_name)
source = archive.extractfile(member)
if source is None:
continue
with source, target.open("wb") as handle:
shutil.copyfileobj(source, handle)
chmod_executable(target)
extracted[member_name] = target
missing = wanted - set(extracted)
if missing:
raise RuntimeError(
f"Archive {archive_path.name} did not contain expected binaries: "
f"{', '.join(sorted(missing))}."
)
return extracted
def extract_named_members_from_zip(archive_path, destination_dir, member_names):
destination_dir.mkdir(parents=True, exist_ok=True)
extracted = {}
wanted = set(member_names)
with zipfile.ZipFile(archive_path) as archive:
for member in archive.infolist():
member_name = Path(member.filename).name
normalized_name = member_name.removesuffix(".exe")
if normalized_name not in wanted or member.is_dir():
continue
target = destination_dir / executable_name(normalized_name)
with archive.open(member) as source, target.open("wb") as handle:
shutil.copyfileobj(source, handle)
chmod_executable(target)
extracted[normalized_name] = target
missing = wanted - set(extracted)
if missing:
raise RuntimeError(
f"Archive {archive_path.name} did not contain expected binaries: "
f"{', '.join(sorted(missing))}."
)
return extracted
class CliTunnelHelper(TunnelHelper):
label = "CLI tunnel"
def __init__(
self,
*,
label,
binary,
port,
command,
url_pattern,
missing_binary_message,
shutdown_command=None,
timeout=30,
notify=None,
binary_resolver=None,
preflight=None,
output_handler=None,
):
super().__init__(port, notify=notify)
self.label = label
self.binary = binary
self.command = command
self.url_pattern = url_pattern
self.missing_binary_message = missing_binary_message
self.shutdown_command = shutdown_command
self.timeout = timeout
self.tunnel_process = None
self.binary_path = None
self.binary_resolver = binary_resolver
self.preflight = preflight
self.command_prefix = []
self.output_handler = output_handler
def _extract_url(self, line):
match = self.url_pattern.search(line)
if not match:
return None
return match.group(1 if match.lastindex else 0).rstrip(".,)")
def start(self):
binary_path = (
self.binary_resolver(self._notify)
if callable(self.binary_resolver)
else shutil.which(self.binary)
)
if not binary_path:
raise RuntimeError(self.missing_binary_message)
self.binary_path = binary_path
if callable(self.preflight):
preflight_result = self.preflight(binary_path, notify=self._notify)
if isinstance(preflight_result, dict):
self.command_prefix = list(preflight_result.get("command_prefix") or [])
command = [binary_path, *self.command_prefix, *self.command[1:]]
self.notify_starting(self.label)
self.tunnel_process = subprocess.Popen(
command,
stdout=subprocess.PIPE,
stderr=subprocess.STDOUT,
text=True,
bufsize=1,
)
output_queue = queue.Queue()
def read_output():
if self.tunnel_process is None or self.tunnel_process.stdout is None:
return
for line in self.tunnel_process.stdout:
output_queue.put(line)
threading.Thread(target=read_output, daemon=True).start()
deadline = time.monotonic() + self.timeout
recent_output = deque(maxlen=8)
while time.monotonic() < deadline:
try:
line = output_queue.get(timeout=0.1)
except queue.Empty:
if self.tunnel_process.poll() is not None:
break
continue
cleaned_line = line.strip()
if cleaned_line:
recent_output.append(cleaned_line)
if callable(self.output_handler):
try:
self.output_handler(cleaned_line, self._notify)
except Exception:
pass
url = self._extract_url(cleaned_line)
if url:
self.tunnel_url = url
self.notify_url_ready(self.label, url)
return self.tunnel_url
details = " ".join(recent_output)
if self.tunnel_process.poll() is not None:
raise RuntimeError(
f"{self.label} exited before it reported a remote URL."
+ (f" Output: {details}" if details else "")
)
self._terminate_process()
raise RuntimeError(
f"{self.label} did not report a remote URL within {self.timeout} seconds."
+ (f" Output: {details}" if details else "")
)
def _terminate_process(self):
if not self.tunnel_process or self.tunnel_process.poll() is not None:
return
self.tunnel_process.terminate()
try:
self.tunnel_process.wait(timeout=8)
except subprocess.TimeoutExpired:
self.tunnel_process.kill()
self.tunnel_process.wait(timeout=3)
def stop(self):
self._terminate_process()
if self.shutdown_command:
binary_path = self.binary_path or shutil.which(self.binary)
if binary_path:
subprocess.run(
[binary_path, *self.command_prefix, *self.shutdown_command[1:]],
check=False,
stdout=subprocess.DEVNULL,
stderr=subprocess.DEVNULL,
timeout=10,
)
self.tunnel_url = None
self.notify_stopped(self.label)
return True
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